Dividers.



PATENTED JUNE 6, 1905.

0. SANSOM. DIVIDERS.

APPLICATION FILED 13110.8,1904i be adjustedthat is to I No. 791,725.

UNITED STATES Patented June 6, 1905.

PATENT OFFICE.

DlVIDERS.

SPECIFICATION forming part of Letters Patent N 0. 791,725, dated June 6, 1905.

Application filed: December 8, 1904. Serial No, 235,934-

The object of my invention in such instru ments is to rovide novel means whereby after the legs ave been roughly set they may say, the angle formed by them altered by very small amounts which will enable the instruments to be employed for more accurate work than could otherwise be done.

The novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a plan view of an instrument having my invention applied thereto, the instrument being shown closed. Fig. 2 is a similar .view to Fig. 1, but shows the legs of the instrument opened out; and Fig. 3 is an edge view of the instrument.

In the drawings, letter a represents one leg of the instrument, and b the other leg; In this instance the two legs are shown pivoted together by a curved spring a, engaging in recesses a b, respectively, in said legs. Between the legs is placed a loose pivot d in such position that the action of the spring a is to normally hold the free ends of the legs at the Widest angle it is intended they shall occupy. Instead of being pivoted together, as shown, the legs may be pivoted in any convenient and well-known manner.

The leg a is slotted longitudinally at a,

and in this slot slides a bolt e, passing through one end of the link f and provided with a clamping-nut e, by which said end of the link f may be secured to the leg a at any point opposite end of the link f is passed over the fixed bolt or stud g, projecting from the leg 6. This end of the link is provided with an openingf, in which works a cam or eccentric g, formed on the collar g confined on the stud or bolt 9 by means of a nut h, but rotatable thereon.

, The link f and slidin bolt e afiord a means of roughly adjusting the legs a and b to the measurement required, and on the nut e being tightened the legs are secured in the desired relative position. Should the legs not have been set at exactly the measurement required, the cam or eccentric g affords a means of decreasing or increasing the effective length of the linkf by very small amounts, the extreme amount of adjustment permissible being determined by the eccentricity of the cam g.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an instrument of the character described, the combination of two legs pivoted together, one of said legs being rovided with a longitudinal slot, a link, a olt and clamping-nut connecting one end of the link to the leg having the longitudinal slot, and a rotatable cam or eccentric connecting the other end of the link with the other of said le s.

2. A divider comprising two legs or members pivotally connected together, one of said legs having a longitudinal slot, and the other of said legs bein provided with a fixed pin, a link having a bo t and clam ing-nut connecting one end thereof with t e leg having the longitudinal slot, a cam or eccentric carried by the fixed pin on the other leg and connecting the other end of the link therewith, and means for rotating the cam or pin.

In testimony whereof I aifix my signature in presence of two witnesses.

CHARLES SAN SOM.

Witnessesz.

FRANK L. ERVIN, FREDK. HAMMOND. 

